TommyTipper

11 hours ago, fjh said:

honestly I don't think it matters however, yes the convex up facing the head ! the sharp side facing the liner that way the ring stays put better! AND just a word to the wise  you should have measured your liner height (protrusion )! correct ?   You needed to be trying to achieve  at least 24 thou  Bottom spec for best results on a 400 plus HP engine !the book low  spec is TOO  low for anything over 400!

Yea that's a what I figured. Jus really wanted to make sure it was right as it seems every truck has a different set up.

Thanks for that

2 hours ago, fjh said:

I have always installed the fire rings sharp side down as long as the rings are the new style none stepped rings! It’s never failed me yet!

Do you mean with the concave facing down?

Hi guys, currently rebuilding my Mack 470 and wondering if anyone knows which way the fire rings go when pressing around the liner on the block? It's a PAI kit and doesn't state which way they go as 1 side is concaved and the other is flat. I'm assuming it's flat side down but would like to know 100%.

Thanks 

Tom

On 10/6/2019 at 1:21 AM, PUP said:

Hey Tommy,

How'd you go with the bottom end? I have the same engine and like yourself experiencing the difficulties researching any info.

Would you know where to acquire a workshop manual?

Cheers Dan

 

Hi mate, I downloaded a workshop manual from online. Can't remember the site but can find out if you still need.

As for the kit I just went with a ccrs 1 to be safe.

Went with a PAI Industries kit. If you're from Australia that was the cheapest and I got it from Gleemans truck parts.

17 minutes ago, 880joe said:

Bottom end should be the same I believe the only difference in the two are in the fuel system

Would the pistons possibly be a different depth or something?

Might just take the drive with a rod and piston and compare but would like to definitely know if its possible.

Hi guys. As its impossible to find any information on the Australian built EA470 macks can someone please tell me if there is any difference in the bottom ends with the standard E-tech and the CCRS?

Rebuilding the bottom end and can get a kit cheap for a standard E-tech but mine's a CCRS model.

Are there any differences with the bottom end?

Thanks.

Tom